 #demo {
    height: 50vh;
    overflow: scroll;
    background-color: #fff;
               
 }

#demo::-webkit-scrollbar {
    display: none;
}

.skin {
    height: auto;
}
.control {
    display: flex;
    position: fixed;
     top: 0;
    right: 0;
    flex-direction: column;
}